If you don't know much about chickens. Then read my blog and you will slowly learn about them.
To keep chickens safe they need to be let in and out of there coop at dusk and dawn. If you know my work schedule I leave before dusk and Keith is not always available so we decide we needed a automatic door opener. We took an automatic antenna from a car (we purchased it at Advance Auto Parts) and attached it to a DC/AC converter and then to a timer. The antenna itself is attached to the coop door for the chickens. So that when the antenna it cut on by the timer it shuts the door and when it is cut off it opens the door. Here is what it looks like.